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Supported Notifiers

Kubed can send notifications via Email, SMS or Chat for various operations using appscode/go-notify library. To connect to these services, you need to create a Secret with the appropriate keys. Then pass the secret name to Kubed by setting notifierSecretName field in Kubed cluster config. Also, set clusterName to a meaningful name for you. This cluster name will be prefixed to any notification sent via Email/SMS/Chat so that you can identify the source easily.

Mailgun

To receive email notifications via Mailgun, create a Secret with the following keys:

Name	Description
MAILGUN_DOMAIN	`Required` domain name for Mailgun account
MAILGUN_API_KEY	`Required` Mailgun API Key
MAILGUN_FROM	`Required` sender email address
MAILGUN_PUBLIC_API_KEY	`Optional` Mailgun public API Key

$ echo -n 'your-mailgun-domain' > MAILGUN_DOMAIN
$ echo -n 'no-reply@example.com' > MAILGUN_FROM
$ echo -n 'your-mailgun-api-key' > MAILGUN_API_KEY
$ echo -n 'your-mailgun-public-api-key' > MAILGUN_PUBLIC_API_KEY
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./MAILGUN_DOMAIN \
    --from-file=./MAILGUN_FROM \
    --from-file=./MAILGUN_API_KEY \
    --from-file=./MAILGUN_PUBLIC_API_KEY
secret "notifier-config" created

apiVersion: v1
data:
  MAILGUN_API_KEY: eW91ci1tYWlsZ3VuLWFwaS1rZXk=
  MAILGUN_DOMAIN: eW91ci1tYWlsZ3VuLWRvbWFpbg==
  MAILGUN_FROM: bm8tcmVwbHlAZXhhbXBsZS5jb20=
  MAILGUN_PUBLIC_API_KEY: bWFpbGd1bi1wdWJsaWMtYXBpLWtleQ==
kind: Secret
metadata:
  creationTimestamp: 2017-07-25T01:31:24Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "714"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: f8e91037-70d8-11e7-9b0b-080027503732
type: Opaque

Now, to receive notifications via Mailgun, configure receiver as below:

notifier: Mailgun
to: a list of email addresses

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Mailgun
    to:
    - ops-alerts@example.com
notifierSecretName: notifier-config

SMTP

To configure any email provider, use SMTP notifier. To receive email notifications via SMTP services, create a Secret with the following keys:

Name	Description
SMTP_HOST	`Required` Host address of smtp server
SMTP_PORT	`Required` Port of smtp server
SMTP_INSECURE_SKIP_VERIFY	`Required` If set to `true`, skips SSL verification
SMTP_USERNAME	`Required` Username
SMTP_PASSWORD	`Required` Password
SMTP_FROM	`Required` Sender email address

$ echo -n 'your-smtp-host' > SMTP_HOST
$ echo -n 'your-smtp-port' > SMTP_PORT
$ echo -n 'your-smtp-insecure-skip-verify' > SMTP_INSECURE_SKIP_VERIFY
$ echo -n 'your-smtp-username' > SMTP_USERNAME
$ echo -n 'your-smtp-password' > SMTP_PASSWORD
$ echo -n 'your-smtp-from' > SMTP_FROM
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./SMTP_HOST \
    --from-file=./SMTP_PORT \
    --from-file=./SMTP_INSECURE_SKIP_VERIFY \
    --from-file=./SMTP_USERNAME \
    --from-file=./SMTP_PASSWORD \
    --from-file=./SMTP_FROM
secret "notifier-config" created

To configure Kubed to send email notifications using a GMail account, set the Secrets like below:

$ echo -n 'smtp.gmail.com' > SMTP_HOST
$ echo -n '587' > SMTP_PORT
$ echo -n 'your-gmail-adress' > SMTP_USERNAME
$ echo -n 'your-gmail-password' > SMTP_PASSWORD
$ echo -n 'your-gmail-address' > SMTP_FROM

Now, to receive notifications via SMTP, configure receiver as below:

notifier: SMTP
to: a list of email addresses

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: SMTP
    to:
    - ops-alerts@example.com
notifierSecretName: notifier-config

Twilio

To receive SMS notifications via Twilio, create a Secret with the following keys:

Name	Description
TWILIO_ACCOUNT_SID	`Required` Twilio account SID
TWILIO_AUTH_TOKEN	`Required` Twilio authentication token
TWILIO_FROM	`Required` Sender mobile number

$ echo -n 'your-twilio-account-sid' > TWILIO_ACCOUNT_SID
$ echo -n 'your-twilio-auth-token' > TWILIO_AUTH_TOKEN
$ echo -n 'your-twilio-from' > TWILIO_FROM
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./TWILIO_ACCOUNT_SID \
    --from-file=./TWILIO_AUTH_TOKEN \
    --from-file=./TWILIO_FROM
secret "notifier-config" created

apiVersion: v1
data:
  TWILIO_ACCOUNT_SID: eW91ci10d2lsaW8tYWNjb3VudC1zaWQ=
  TWILIO_AUTH_TOKEN: eW91ci10d2lsaW8tYXV0aC10b2tlbg==
  TWILIO_FROM: eW91ci10d2lsaW8tZnJvbQ==
kind: Secret
metadata:
  creationTimestamp: 2017-07-26T17:38:38Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "27787"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: 41f57a61-7229-11e7-af79-08002738e55e
type: Opaque

Now, to receive notifications via Twilio, configure receiver as below:

notifier: Twilio
to: a list of receiver mobile numbers

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Twilio
    to:
    - +1-999-888-1234
notifierSecretName: notifier-config

Slack

To receive chat notifications in Slack, create a Secret with the following keys:

Name	Description
SLACK_AUTH_TOKEN	`Required` Slack legacy auth token

$ echo -n 'your-slack-auth-token' > SLACK_AUTH_TOKEN
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./SLACK_AUTH_TOKEN
secret "notifier-config" created

apiVersion: v1
data:
  SLACK_AUTH_TOKEN: eW91ci1zbGFjay1hdXRoLXRva2Vu
kind: Secret
metadata:
  creationTimestamp: 2017-07-25T01:58:58Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "2534"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: d2571817-70dc-11e7-9b0b-080027503732
type: Opaque

Now, to receive notifications via Slack, configure receiver as below:

notifier: Slack
to: a list of chat room names

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Slack
    to:
    - '#ops-alerts'
notifierSecretName: notifier-config

Plivo

To receive SMS notifications via Plivo, create a Secret with the following keys:

Name	Description
PLIVO_AUTH_ID	`Required` Plivo auth ID
PLIVO_AUTH_TOKEN	`Required` Plivo authentication token
PLIVO_FROM	`Required` Sender mobile number

$ echo -n 'your-plivo-auth-id' > PLIVO_AUTH_ID
$ echo -n 'your-plivo-auth-token' > PLIVO_AUTH_TOKEN
$ echo -n 'your-plivo-from' > PLIVO_FROM
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./PLIVO_AUTH_ID \
    --from-file=./PLIVO_AUTH_TOKEN \
    --from-file=./PLIVO_FROM
secret "notifier-config" created

apiVersion: v1
data:
  PLIVO_AUTH_ID: eW91ci1wbGl2by1hdXRoLWlk
  PLIVO_AUTH_TOKEN: eW91ci1wbGl2by1hdXRoLXRva2Vu
  PLIVO_FROM: eW91ci1wbGl2by1mcm9t
kind: Secret
metadata:
  creationTimestamp: 2017-07-25T02:00:02Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "2606"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: f8dade1c-70dc-11e7-9b0b-080027503732
type: Opaque

Now, to receive notifications via Plivo, configure receiver as below:

notifier: Plivo
to: a list of receiver mobile numbers

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Plivo
    to:
    - +1-999-888-1234
notifierSecretName: notifier-config

Pushover.net

To receive push notifications via Pushover.net, create a Secret with the following keys:

Name	Description
PUSHOVER_TOKEN	`Required` Pushover.net token.
PUSHOVER_USER_KEY	`Required` User key or group key.
PUSHOVER_TITLE	`Optional` Message’s title, otherwise your app’s name is used.
PUSHOVER_URL	`Optional` A supplementary URL to show with your message.
PUSHOVER_URL_TITLE	`Optional` A title for the supplementary URL, otherwise just the URL is shown.
PUSHOVER_PRIORITY	`Optional` Send as -2 to generate no notification/alert, -1 to always send as a quiet notification, 1 to display as high-priority and bypass the user’s quiet hours, or 2 to also require confirmation from the user.
PUSHOVER_SOUND	`Optional` The name of one of the sounds supported by device clients to override the user’s default sound choice.

$ echo -n 'your-pushover-token' > PUSHOVER_TOKEN
$ echo -n 'your-pushover-user-key' > PUSHOVER_USER_KEY
$ echo -n 'your-pushover-title' > PUSHOVER_TITLE
$ echo -n 'your-pushover-url' > PUSHOVER_URL
$ echo -n 'your-pushover-url-title' > PUSHOVER_URL_TITLE
$ echo -n 'your-pushover-priority' > PUSHOVER_PRIORITY
$ echo -n 'your-pushover-sound' > PUSHOVER_SOUND
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./PUSHOVER_TOKEN \
    --from-file=./PUSHOVER_USER_KEY \
    --from-file=./PUSHOVER_TITLE \
    --from-file=./PUSHOVER_URL \
    --from-file=./PUSHOVER_URL_TITLE \
    --from-file=./PUSHOVER_PRIORITY \
    --from-file=./PUSHOVER_SOUND
secret "notifier-config" created

apiVersion: v1
data:
  PUSHOVER_PRIORITY: eW91ci1wdXNob3Zlci1wcmlvcml0eQ==
  PUSHOVER_SOUND: eW91ci1wdXNob3Zlci1zb3VuZA==
  PUSHOVER_TITLE: eW91ci1wdXNob3Zlci10aXRsZQ==
  PUSHOVER_TOKEN: eW91ci1wdXNob3Zlci10b2tlbg==
  PUSHOVER_URL: eW91ci1wdXNob3Zlci11cmw=
  PUSHOVER_URL_TITLE: eW91ci1wdXNob3Zlci11cmwtdGl0bGU=
  PUSHOVER_USER_KEY: eW91ci1wdXNob3Zlci11c2VyLWtleQ==
kind: Secret
metadata:
  creationTimestamp: 2017-08-04T05:13:07Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "33711872"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: 99df75a8-78d3-11e7-acfa-42010af00141
type: Opaque

Now, to receive notifications via Pushover.net, configure receiver as below:

notifier: Pushover
to: a list of devices where notifications will be sent. If list is empty, all devices will be notified.

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Pushover
    to:
    - my-phone
notifierSecretName: notifier-config

To receive notifications in your Telegram app, please follow the steps below:

Sign up for Telegram.
Now, use @botfather to create your own Telegram Bot and get the authorization token.
Create a Kubernetes Secret with the following keys:

Name	Description
TELEGRAM_TOKEN	`Required` Telegram Bot authorization token.

$ echo -n 'your-telegram-bot-token' > TELEGRAM_TOKEN
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./TELEGRAM_TOKEN
secret "notifier-config" created

apiVersion: v1
data:
  TELEGRAM_TOKEN: NDkxoooooooooooooooooxJ
kind: Secret
metadata:
  creationTimestamp: 2018-01-16T13:41:04Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "768"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: e6066076-fac2-11e7-b3e7-0800276ee39b
type: Opaque

Add the Bot as an Admin for your channel where notifications will be sent.

Now, to receiver notifications in your public Telegram channels, configure receiver as below:

notifier: Telegram
to: a list of channels where notifications will be sent.

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Telegram
    to:
    - '@my-channel'
notifierSecretName: notifier-config

To receive notifications if your private channel, follow the steps below:

Create a new public channel or change your private channel to public temporarily and assign a link.
Now, run the following command to determine the id for your channel.

TOKEN=<token>
curl -X POST https://api.telegram.org/bot${TOKEN}/sendMessage -d "chat_id=@channelusername&text=hello"

{"ok":true,"result":{"message_id":10,"chat":{"id":-1001210429328,"title":"mytest","username":"mytest123489","type":"channel"},"date":1516103121,"text":"hello"}}

Make your channel private.

Now, to receiver notifications in your private Telegram channels, configure channle id as receiver like below:

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Telegram
    to:
    - '-1001210429328'
notifierSecretName: notifier-config

Webhook Notifier

To receive chat notifications via Webhook, create a Secret with the following keys:

Name	Description
WEBHOOK_URL	`Required` URL of webhook server where notification is sent
WEBHOOK_USERNAME	`Optional` Username for basic auth
WEBHOOK_PASSWORD	`Optional` Password for basic auth
WEBHOOK_TOKEN	`Optional` Token for bearer auth
WEBHOOK_CA_CERT_DATA	`Optional` PEM encoded CA certificate used by Webhook server
WEBHOOK_CLIENT_CERT_DATA	`Optional` PEM encoded client certificate used to authenticate to Webhook server
WEBHOOK_CLIENT_KEY_DATA	`Optional` PEM encoded client private key used to authenticate to Webhook server
WEBHOOK_INSECURE_SKIP_VERIFY	`Optional` If set to `true`, skips SSL verification of Webhook server certificate

$ echo -n '' > WEBHOOK_URL
$ echo -n '' > WEBHOOK_TOKEN
$ echo -n '' > WEBHOOK_CA_CERT_DATA
$ kubectl create secret generic notifier-config -n kube-system \
    --from-file=./WEBHOOK_URL \
    --from-file=./WEBHOOK_TOKEN \
    --from-file=./WEBHOOK_CA_CERT_DATA
secret "notifier-config" created

apiVersion: v1
data:
  WEBHOOK_URL: eW91ci1oaXBjaGF0LWF1dGgtdG9rZW4=
  WEBHOOK_TOKEN: eW91ci1oaXBjaGF0LWF1dGgtdG9rZW4=
  WEBHOOK_CA_CERT_DATA: eW91ci1oaXBjaGF0LWF1dGgtdG9rZW4=
kind: Secret
metadata:
  creationTimestamp: 2017-07-25T01:54:37Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "2244"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: 372bc159-70dc-11e7-9b0b-080027503732
type: Opaque

Now, to receiver notifications via Webhook, configure receiver as below:

notifier: Webhook
to: a list of receiver names

clusterName: unicorn
eventForwarder:
  receivers:
  - notifier: Webhook
    to:
    - ops-alerts
notifierSecretName: notifier-config

Using multiple notifiers

Kubed supports using different notifiers in different scenarios. First add the credentials for the different notifiers in the same Secret notifier-config and deploy that to Kubernetes. Then in the Kubed cluster config, specify the appropriate notifier for each feature.

apiVersion: v1
data:
  MAILGUN_API_KEY: eW91ci1tYWlsZ3VuLWFwaS1rZXk=
  MAILGUN_DOMAIN: eW91ci1tYWlsZ3VuLWRvbWFpbg==
  MAILGUN_FROM: bm8tcmVwbHlAZXhhbXBsZS5jb20=
  SLACK_AUTH_TOKEN: eW91ci1zbGFjay1hdXRoLXRva2Vu
kind: Secret
metadata:
  creationTimestamp: 2017-07-25T01:58:58Z
  name: notifier-config
  namespace: kube-system
  resourceVersion: "2534"
  selfLink: /api/v1/namespaces/kube-system/secrets/notifier-config
  uid: d2571817-70dc-11e7-9b0b-080027503732
type: Opaque


clusterName: unicorn
eventForwarder:
  warningEvents:
    handle: true
    namespaces:
    - kube-system
  receivers:
  - notifier: Mailgun
    to:
    - ops@example.com
  - notifier: Slack
    to:
    - '#ops-alerts'
notifierSecretName: notifier-config

Next Steps

Want to keep an eye on your cluster with automated notifications? Setup Kubed event forwarder.
Learn how to use Kubed to protect your Kubernetes cluster from disasters here.
Need to keep configmaps/secrets synchronized across namespaces or clusters? Try Kubed config syncer.
Out of disk space because of too much logs in Elasticsearch or metrics in InfluxDB? Configure janitors to delete old data.
Wondering what features are coming next? Please visit here.
Want to hack on Kubed? Check our contribution guidelines.

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